Using a technology similar to that of the flocking road cones that protect your car from pot holes, you park on the first available slot in the lot at the station and turn your engine off. When a pump is available, it makes its way over to your car and fills it up.

When your car is filled up, the
pump waves its hose in the air and tootles its horn, informing you it has done its job. You walk/drive to the station shop and pay for your fuel, while the pump flocks to the next car in the vicinity.

Fuel cap on top of the car, hoses hanging down from the canopy over the petrol station, suspended from mobile gantries. Park where there's a space, the fuel hose will come to you. I disagree with the [mfd].